User manual

Appendix: MPEG Encoder Settings 125
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properties to the data stream like the option to display an image at a
reduced resolution for restricted transmission quality (SNR-scalable
profile), or locally scaled, for instance an HDTV data stream on a
standard TV set. The 4:2:2 profile is used if the image data is to be
encoded for alternative chroma scanning. However, these profiles are
supported by very few encoders, and mainly only for professional
use.
These levels define the restrictions to the image resolution and the
maximum data rate. Low level can only reach a reduced resolution
(352x2888 = CIF); high level, or High 1440, enables encoding in
HDTV format.
Estimate movement: These parameters are controlled via the quality
controller (see General Settings).
Other
Noise sensitivity: This factor defines how sensitive the encoder will
react to noise in the source material. If the source material only
contains a little noise (digital recordings, computer animations, or
material already de-noised by video cleaning), then you don't have to
change the default value 4, or you can even reduce to increase the
quality further. However, if you want to encode noisy material, then
too low of a factor will considerably increase the encoding time at the
cost of quality. For an unedited analog video you can increase the
factor to 8-14.
Noise reduction (click on noise sensitivity): A noise filter is used with
adjustable settings from 1-31.
Advanced parameters
Additional expert settings are available in the tree to the right of the
window. These should only be changed by experienced users. They
have been optimized for general applications to such an extent that
changes are only necessary in exceptional cases.
Audio settings
Audio Type: You can use MPEG -1/-2, PCM (WAV), or Dolby
®
Digital.
You can also select "No audio" in the export dialog.
Sample rate: You can set a sample rate of 32, 44.1 or 48 kHz for the